CVE-2020-1442 Cross-site scripting in Microsoft Office Online Server
Attackers can execute arbitrary scripts in user browsers via crafted requests to Office Web Apps, potentially leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-1442?
CVE-2020-1442 is a medium-severity cross-site scripting vulnerability in Microsoft Office Online Server, published on 14 Jul 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A spoofing vulnerability exists when an Office Web Apps server does not properly sanitize a specially crafted request, aka 'Office Web Apps XSS Vulnerability'.
Weakness: CWE-79
Which versions are affected by CVE-2020-1442?
It affects 2 products.
Products include Microsoft Office Online Server, Microsoft Office Web Apps.
How do I fix CVE-2020-1442?
No fix has been published for CVE-2020-1442 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2020-1442 being exploited?
There is no known exploitation of CVE-2020-1442 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Office Online Server
- CVE-2022-33648 Microsoft Excel Remote Code Execution Vulnerability
- CVE-2017-8743 Memory corruption in Microsoft Office
- CVE-2023-23396 Microsoft Excel Denial of Service Vulnerability
- CVE-2022-30159 Microsoft Office Information Disclosure Vulnerability
- CVE-2022-30171 Microsoft Office Information Disclosure Vulnerability
Sources
Also known as GHSA-6c2p-9hhc-8hc8.